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J. B. GILLESPIE. v DBVIGEPQR CONVERTING MOTION. I I No. 349,429. Patented Sept. 21, 1 886..

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UNITE STATE PATENT OFF C AMES E. einLESPIE, '1 wARwIomnEw YORK, ASSIeNoRTo TH WAR- 'WIOK MACHINE COMPANY, OF SAME PLACE.

DEVICEYFOR CONVERTING MOTION.

Qfi-forming part of Letters Patent No. 349,429, dated September 21,1886.

.,- Application filed May 14, 1886.

v To all whom, it may concern.-

. Beit known that 1, JAMES E. GILLESPIE, of Warwick, in the county ofOrange and State of New York, have invented a new and useful Improvementin Devices for Converting Motion, of which the following isaspecification. My invention more particularly relates to .1 steampumping-engines which are mounted upion a wagon or tru'ck,so as to forma steam fire- 6'35?" Aengine, portable from place to place; but it mayalso be embodied in stationary pumpingengines, which are employed forfire purposes in'factories and other places, and in other machines whereit is desired to convert the rapid rotary motion obtained by ashort-stroke engine into a long-stroke reciprocating motion. In thesteam fire-engines now in use, which comprise a reciprocatingpump-piston, such r. pump-piston is worked with a very short stroke andatahigh speed, and the consequence is that the water is churned back andforth through the valves and passages,and'the pump exerts or transmitsin its useful effect but a small proportion of the power exerted by theengine.

It is of course obvious that an engine and pump of the ordinaryconstruction, with a very longstroke, might be employed for fireengines;but such pump and engine would be '30 objectionable by reason of itstotal length, and

because of the space occupied.

An important object of my invention is to 7 provide for fire-engines orfor other apparatus a mechanism which includes aerank-shaft with 3 ashort-stroke crank and a rodsuch as a pump piston-rod-to which along-stroke reciprocating motion may be imparted.

In carrying out my invention I combine with a reciprocating pumppiston-rod or other 40 rod and a mangle-rack connected with the rod foroperating it, and movable laterally rela tively to the rod, a pinionwhich engages with the rack, and a pinion-shaft which is mounted infixed bearings, and may constitute the 4 5 crank-shaft of an engine.Bythis improvement I provide for operating a short-stroke engine at ahigh speed, and for transmitting from such engine the power necessary tooperate a long-stroke reciprocating pump-piston Serial No. 202,132. (nomodel.)

with a short stroke, and a pump which oper- 5o ates with a comparativelylong stroke.

In carrying out my invention I combine with the reciprocating pumppiston-rod and a mangle-rack connected with the pump-rod for operatingit, and movable laterally relatively to the pump-rod, a pinion whichengages with the rack, and a pinion-shaft which is mounted in fixedbearings and is operated by the engine. By this improvement Iprovidefoi' operating a short-stroke engine at a high speed, and fortransmitting from such engine the power necessary to operate along-stroke reciprocating pump-piston.

The invention consists inv novel combinations of parts, which arehereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is an elevation of such parts ofan engine and pump as are necessary to illustrate my invention. Fig. 2is a sectional elevation thereof upon the plane of the dottedline a; 00,Fig. 1; and Fig. 3 is a plan thereof, the guides for the pump cross-headonly being shown in section.

Similar letters of reference designate corresponding parts in theseveral figures.

A designates as much of a pump-cylinder as is necessary to illustratemyinvention, and B designates the pump piston-rod, to which is secured across-head, B, fitted to suitable guides, B for guiding it in itsreciprocating movement. C designates an engine, which, as here shown, isof the oscillating type, having its trunnions at the outer or lower endof the cylinder, and a piston-rod, O, which is connected with a crank,0, upon the crankshaft O This'crankshaft 0 is, or may be, provided witha flywheel, O, and is mounted in suitable bearings, c, on the frame 0.lhis engine will usually have a comparatively short stroke, and willtransmit a rapid rotary motion to the crankshaft G". Of course an engineoperated by other power than steam might be employed; but I havesupposed this to beasteam-e'ngine, because that agent is most universalin obtaining power in fire-engincs.

The means employed for transmitting motion from the crank-shaft O of theengine to e amaze the reciprocating piston-rod .B of the pump consists,essentially, of a mangle-rack, D, and apinion, D. Themangle-raekDhasasliding connection with the cross-head Bof the pump,which will enable it to move laterally toward and from said piston-rod,and it is maintained in parallelism therewith during such lateralmovement. As here shown, the upper end of the mangle-rack D is pivotedor otherwise secured to a block, d, which is capable of sliding towardand from the piston-rod B in the slideway or guideway d, provided in thecross-head B. As here represented, the mangle-rack D has its teethpresented internally, and is closed at the outer side by a shell or'plate, on which is formed a rib or bearer, (Z and said rib or bearerbears against a roller, (1", which is secured to a support, d, fixed tothe frame 0, or to the pump-cylinder.

As represented in the drawings, the crankshaft O" and the roller (1 areupon the same side of the rib or bearer (Z and consequently as thecrank-shaft and the pinion D are rotated in the direction of the arrowshown in Fig. 1 the mangle-rack D will be raised, and will carry with itthe piston-rod B of the pump.

' It will be understood that the roller d mainas it engages with theleft-hand side of the rack shown in Fig. 1.

It will be seen that by my invention I provide a more compact mechanismwhich will transmit from a short-stroke engine having a rapid revolutionmotion to a long stroke pump,which pump will be operated moree'ffectively than when it is operated with a very short stroke andthewater is churned or moved rapidly backward and forward in itspassages.

In order to aid the transfer of the pinion from one side to the other ofthe rack, and to change the direction of the motion transmitted thereto,I have represented upper and lower cams, e e, which are secured to thefixed porwhich serves to move it toward the left hand of Fig. 1, ortoward the piston-rod ofthe pump.

\Vhat I claim as my invention, and desire to secure by Letters Patent,is

1. The combination, with a reciprocating rod and a mangle-rack connectedwith the rod for operating it and movable laterally relatively to therod, of a pinion engaging the rack, and a crank-shaft arranged in fixedbearings, and 011 which the pinion is secured, substantially as hereindescribed.

2. The combination, with a reciprocating rod and a mangle-rack connectedwith the rod for operating it and movable laterally relatively to therod, of stationary cams,wit11 which the rack engages near the ends ofits travel to shift it laterally, and a pinion engaging the rack andsecured upon a shaft in fixed bearings, substantially as hereindescribed.

3. The combination, with a reciprocating rod and a cross-head thereon,of a mangle-rack having a sliding connection with the crosshead toprovide for the lateral movement of the rack toward and from the rod, 'aroller having a fixed support, and with which a rib or bearer on therack engages to aid in holding the rack parallel with the rod as ittravels, and a pinion engaging the rack and secured on a shaft in fixedbearings, substantially as herein described.

4:. The combination, with the rod B and its cross-head B, of theinternal mangle-rack, D, having a sliding connection at one end with thecross-head, and provided with a rib or bearer, (P, the roller d mountedon the fixed support and engaging the rib or bearer, and thecrankshaft-O, mounted in fixed bearings and having upon it a pinionengaging said 100 \Vitnesses:

O. HALL, FREDK. HAYNEs.

It is hereby certified that in Letters Patent No. 349,429, grantedSeptember 21, 1886,

upon the application of James E. Gillespie, of Warwick, New York, for animprovement in Devices for Converting Motion, errors appear in theprinted specification requiring the following correction: At the end ofline 49, page 1, a period should be inserted, and all of the matter inlines 50 to 63 inclusive, same page, should be stricken out;- in line44, page 2, a comma should be inserted after the word revolution, and

that the said Letters Patent should be read with these correctionstherein that the 7 same may conform to the record of the case in thePatent Office.

Signed, countersigned, and sealed this 5th day of October, A. D. 1886.

[SEAL] H. L. MULDROW,

Acting Secretary of the Interior. Counter-signed: 1 B. B. VANCE,

Acting Commissioner of Patents.

